It’s possible to be more than one thing driving fascism.
In the absence of a general worker uprising to bring about revolution (this isn’t going to happen before the election) stopping Trump is a fine alternative to stem fascism.
We know that fascists need a charismatic leader with unquestionable authority (Trump) may as well cut that head off the snake now.
Does that stop capitalist interests? No, their money and power is still there but it at least won’t be manifesting through a dictator.
Capitalist interests have operated just fine without a dictator.